Define specific error for event stream ended

src/client.rs

@@ -68,6 +68,9 @@ impl<T: TokenProvider + Clone> GeminiClient<T> {
         let mapped = event_source.filter_map(|event| {
             let event = match event {
                 Ok(event) => event,
+                Err(reqwest_eventsource::Error::StreamEnded) => {
+                    return Some(Err(Error::EventSourceClosedError))
+                }
                 Err(e) => return Some(Err(e.into())),
             };
 

src/error.rs

@@ -16,6 +16,7 @@ pub enum Error {
     NoCandidatesError,
     CannotCloneRequestError(CannotCloneRequestError),
     EventSourceError(reqwest_eventsource::Error),
+    EventSourceClosedError,
 }
 
 impl Display for Error {
@@ -37,6 +38,9 @@ impl Display for Error {
             Error::EventSourceError(e) => {
                 write!(f, "EventSourrce Error: {}", e)
             }
+            Error::EventSourceClosedError => {
+                write!(f, "EventSource closed error")
+            }
         }
     }
 }